189629290 has 8 divisors (see below), whose sum is σ = 341332740. Its totient is φ = 75851712.

The previous prime is 189629281. The next prime is 189629303. The reversal of 189629290 is 92926981.

189629290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 185422689 + 4206601 = 13617^2 + 2051^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 189629290.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9481455 + ... + 9481474.

Almost surely, 2^189629290 is an apocalyptic number.

189629290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189629290 is a deficient number, since it is larger than the sum of its proper divisors (151703450).

189629290 is a wasteful number, since it uses less digits than its factorization.

189629290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18962936.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 189629290 is about 13770.5951214898. The cubic root of 189629290 is about 574.5155743526.

The spelling of 189629290 in words is "one hundred eighty-nine million, six hundred twenty-nine thousand, two hundred ninety".